Copper-catalyzed coupling of 1,1-dibromo-1-alkenes with phenols: a general, modular, and efficient synthesis of ynol ethers, bromo enol ethers, and ketene acetals

Copper-catalyzed coupling of 1,1-dibromo-1-alkenes with phenols: a general, modular, and efficient synthesis of ynol ethers, bromo enol ethers, and ketene acetals